diff --git a/chart/env/prod.yaml b/chart/env/prod.yaml
index 1756278d0f..04f8fc21f0 100644
--- a/chart/env/prod.yaml
+++ b/chart/env/prod.yaml
@@ -198,7 +198,7 @@ backfill:
   log:
     level: "debug"
   action: "backfill"
-  schedule: "45 21 * * *"
+  schedule: "30 13 * * *"
   # every day
   nodeSelector:
     role-datasets-server: "true"
diff --git a/libs/libcommon/src/libcommon/constants.py b/libs/libcommon/src/libcommon/constants.py
index 345aae8468..1e301aec06 100644
--- a/libs/libcommon/src/libcommon/constants.py
+++ b/libs/libcommon/src/libcommon/constants.py
@@ -42,8 +42,6 @@
     "ExternalServerError",
     "JobManagerCrashedError",
     "LockedDatasetTimeoutError",
-    "PreviousStepFormatError",
-    "PreviousStepStatusError",
     "PreviousStepStillProcessingError",
     "StreamingRowsError",
 }